How do the the bookies rate Chesterfield's promotion hopes after poor start and who are the other contenders?

Chesterfield are without a win in seven games and have tumbled down the odds with the bookies for promotion.Chesterfield are without a win in seven games and have tumbled down the odds with the bookies for promotion.
Chesterfield are without a win in seven games and have tumbled down the odds with the bookies for promotion.
Chesterfield were one of the favourites to win promotion from the National League before a ball had been kicked.

But after seven games without a win, how do the bookies rate their chances now? And who are the other contenders? Let's take a look...